M306V2 Mitsubishi, M306V2 Datasheet - Page 170

• Manufacturer Part Number: M306V2
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
• Manufacturer: Mitsubishi

170
Note: It takes a few tens of milliseconds until the reference clock becomes stable after the data slicer and
Figure 2.14.7 Determination of v-pulse waveform
2.14.5 Timing Signal Generating Circuit
This circuit generates a reference clock which is 832 times as large as the horizontal synchronous signal
frequency. It also generates various timing signals on the basis of the reference clock, horizontal syn-
chronous signal and vertical synchronizing signal. The circuit operates by setting bit 0 of data slicer
control register 1 (address 0260
The reference clock can be used as a display clock for OSD function in addition to the data slicer. The
H
H
selected by bit 2 of data slicer control register 1 (address 0260
For the pins HLF, connect a resistor and a capacitor as shown in Figure 2.14.1 Make the length of wiring
which is connected to these pins as short as possible so that a leakage current may not be generated.
the timing signal generating circuit are started. In this period, various timing signals, H
and V
when programming.
SYNC
SYNC
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signal can be used as a count source instead of the composite sync signal. However, when the
signal is selected, the data slicer cannot be used. A count source of the reference clock can be
signals become unstable. For this reason, take stabilization time into consideration
Composite
sync signal
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
16
) to “1.”
A
B
16
).
Bit 5 of DSC2
and ON-SCREEN DISPLAY CONTROLLER
0
1
1
MITSUBISHI MICROCOMPUTERS
M306V2ME-XXXFP
M306V2EEFP
sep
signals
Rev. 1.0